This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

The "Seinfeld" diner.

Ride the subways of yesteryear.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A terrific purveyor of natural history objects and curios.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

The "lovely red Vega" of the legendary record-settling pilot.

Washington's iconic carousel has a nice piece of Civil Rights history.

Perhaps the most scandalous statue of America's first president.

Home to a vast and influential collection of Shakespeareana.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

An interactive back-alley mural project remembers the golden age of Kuala Lumpur’s Chinatown.

One of the world's tallest flagpoles.

After being bombed and largely abandoned, this former railway workshop has been transformed into a lively market space.

The largest Chinese cemetery in the world outside of China dates back to the 15th century.

Next to the Malaysian Prime Minister’s office stands this rose-colored mosque.